Steam-blower for gas-producers.



E. A. W. JEFFERIES.

STEAM BLOWER FOR GAS PRODUCERS.

APPLICATION FILED sEPT.e,1913.

Patented Feb. 1, 1916.

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Inverzfov Ebenejev/cze v e /n enses.

UNITED STATES PATENT OFFICE.

EBENEZER A. W. JEFFERIES, DF WORCESTER, MASSACHUSETTS, ASSIGNORTO MORGAN CONSTRUCTION (SOMPA'HY, OF WORCESTER, MASSACHUSETTS, A CORPORATION 0F MASSACHUSETTS.

STEAM-BLOWER FOR GAS-PRODUCERS.

Specification of Letters Patent.

Patented Feb. l, 1916.

Application filed September 8, 1913. Serial No. 788,538.

To all whom t may concern.'

Be it known that I, A. IV. Jur.- rEInEs, a .citizen of the United States, residing at IVorcester, in the county of VVorcester and Commonwealth of lVlassachusetts. have invented a new and useful Improvement in SteamBlowers for Gas-Producers, of which the following, together with the accompanying drawing, is a specification.

My invention relates to steam blowers for prducing the blast necessary to support combustion within the combustion chamber of la gas producer, afid more particularly to a form of steam blowers of this class having a plurality of steam nozzles which cooperate to produce the blast.

In order that the gas producer may be operated efficiently, it is frequently neces sary that the rate el combustion of the fuel within the combustion Chamber of the pro ducer be such as to require a heavy blast of air or air and steam. It is common to produce the blast necessary to support combustion in a gas producer by means ot a steam blower having a single nozzle. There is a limit, however, to the size of such steam blowers beyond which they are not practi cable, for the reason that an increase in the rate of flow of the steam does not cause a corresponding increase in the rate at which the air is forced into the producer. When "this limit has been reached, if the blast produced is not sufficient, it has been the practice to add one or more independent blowers to furnish the required additional blast. The provision of a plurality of independent blowers, however, requires considerable valuable space beneath the base of the producer.

One of the objects of the invention. there fore, is to provide a form of steam blower the capacity of which may be increased prac tically indefinitely without impairing its et"n ficiency, so that a heavy blast necessary to support combustion in the largest gas protuners may be supplied by a single steam blower. A

Other objects and advantages will appeal' from the following description taken in connection with the accompanying drawing, in which v Figure l shows a sectional elevation of the lower portion of a gas producer equipped with a multiple nozzle stearr blower constructed in accordance with my invention;

'view of the steam blower on the line 8-3 of Fig. 2. A

Like reference characters refer to similar parts in the dil'erent figures.

In the form of the invention shown in the drawing the blower includes a combining tube 1 leading to an upright pipe 2 which conducts the blast to the 4fuel Within the fuel section 3 of the producer. The outer end of the combining tube 1 is cone shaped with its smaller end toward the producer. This cone shaped portion of the Combining tube surroundsa plurality of steam nozzles 4, equally spaced about the axis of the combining tube. In the form of blower shown in the drawing, three equally spaced steam nozzles are used, although .it will be obvious that a ditl'erent number may be used desired. The outer or larger end ot' the combining tube 1 is covered with a plate Fi having air admission openings 6, there being preferably one of said openings in line with each of the steam nozzles. This plate 5 has a central projection 7 extending into the combining tube. and supporting the steam nozzles 4, as shown in Fig. 9.. A space 8 within the projection 7 is joined by separate passages 9 -to the various steam nozzles. Steam is conducted to the space 8 by a. pipe 10 threaded axially into the plate `5, the steam passing from the space 8 through the separate passages 9 to the various nozzles. The three nozzles are supported the. preiec'tion i' so that their axes converge siight-iy toward a common point. In .front ci each steam nozzle, and preferably slightly over-1 lapping it, is a small tapered combining tube l1 and in front of each of these combining tubes 11, and preferably slightly overlapping it, is a second* slightly larger combining tube 12. Each set of these small com bining tubes 11 and 12 is formed integrally with a hub having an axial opening, the bolt 13 being passed through the openings in bothA hubs and being threaded into the pro jection 7 to secure the small combining tubes 1l and 12 in their proper positions. Relative rotation between the steam nozzles 4, the combining tubes 11 and the combining tubes I2 is prevented. by small pins 14.

Pivoted to the pipe l0 and lying against the outer face of the plate 5 is a second plate 15. The plate l5v is provided with screened openings 16 corresponding in number to the openings 6 in the plate b. .lot-ation of the plate 15 .about the pipeG carries tbe openings 16 into or out of register with tne openings 6 so as to control tbe passage of air into the main combining tube 1. The plate 15 is pressed yieldingly against the plate 5 by a spring 17, the force of tbe spring 17 being determined by the position of the collar 18 upon the pipe 10. A lateral projection 19 at the periphery of the plate 15 overlaps the periphery ot the fixed plate 5 and carries e set screw 20 adapted to engage the edge of the plate 5 and hold the plate 15 in any desired angular position. Y

In the operation of the blower, strong j ets of steam pass from the nozzles l into the combining tubes 11,`drawing air with them through these combining tubes. and steam then pass through tbe combining tubes 12, drawing in more air through the annular openings between the forward ends of the combining tubes 1'1 and the rear ends of the combining tubes 12.` Air and steam then issue from the smaller ends vot the combining tubes 12 and, after drawing still more air through the opening between these latter combining tubes andl tbe main combining tube 1, pass tlirougb tbe inner and smaller portion vof the main etunbining tube. 1 and thence through theupright pipe .2 to the combustion chamber of the producer. By supporting the steam nozzles 4 and tbe combining tubes 11 and lupon tbe plat-e or cover 5 instead of upon 'tbe wall of the main combining' tube 1, the passage of the air through the main combining tube 1 is interfered with as little as possible, this feature being important in its iniiuenee on tbe capacity of the blower.

vWhile I have shown andv described the details of one form of'rny invention, l. do not Wish to be limited to such details as changes may be made without departing from the spirit of the invention; but- Having described my invention, what claim as new and desire to secure by Letters Patentis:

1. In a. steam blower for gas producers, a. main combining tube, a plurality of steam nozzles Within the main combining tube, e separate combining tube in front of each steam nozzle and within the main combining This air' tube, and. means arranged axially Within the each steam nozzle and within'the main come' bining tube, and means arranged axially.

within the main combining tube and supported by tbe central portion of seid cover for supporting the nozzles and the combining tubes in front of the nozzles.

3. In a steam blower for gas producers, a main combining tube, e plurality of steam nozzles within the main combining tube, u. support t'or the nozzles, a separate combining tube in front of each steam nozzle and -witbin the main combining tube, tbe conif' bining tubes in front'of the nozzles being carried by a common hub, and means for securing the hub to the nozzle support.

.ln steam blower for gas producers, e moin combining tube, a cover for the main combining tube, said cover hnvingair 'admission openings a steam nozzle within the mein combining tube, and a second combining tube in front of the steam nozzle and witbin the Innincombining tube, the steam nozzle und tbe second combining tube being supported by tbe cover of the main combining tube.

ln a steam blower for gas producers, a main. combining tube, a cover for the mein combining tube, a steam lnozzle within tbe main combining tube, a second combining tube in front or" the steam nozzle and within the main combining tube, a pipe at the center of said cover to Conduct steam to the 1in nozzle, a plate pivoted upon the pipe and lying against tbe cover, the plete und cover l wing openings movable into and out of register by rotation of the plate, and for pressing the plate yieldingly st the cover.

Dated tbislifth day of September, 12113.

FBENEZER A. W. JEFFERIES. 1V itnesses:

Psnmiorz Conmnuuson,

NnLLm vWHALEN. 

